Arithmetical chart



(No Model.)

T. HOOLEY. ARITHMETIGAL Gli-ART. No. 322,376. Patented July 14, 18.85.`

WIT/VESSES UNITED ,STATES PATENT OFFICE.

THOMAS HOOLEY, OF DAVENPORT, IOWA.

ARITHMETICAL CHART.

SPECIFICATION forming part of Letters Patent No, 322,376, dated J u1y`14, 1 885.

' Application filed April 4, 1885. (No model.)

To all whom it may concern:

Be it known that I, THOMAS HooLEY, a citizen of the United States, residing at Davenport, in the county of Scott and State of Iowa, have invented a new and useful Improvement in Arithmetical Charts, of which the -following is a specification, reference being had to the accompanying drawings.

My invention relates to an improvement in arithmetical charts; and it has for its object to provide a device of this character with a series of vertically-arranged bands or strips arranged to be turned, and having a series of numerals arranged at intervals thereon, and also to provide a series of horizontallyarranged bands having thereon signs-such as -l, X, -e--adapted to be turned so as to occupy a position between any of the vertically-disposed bands, and thus show that the numerals are to be added, subtracted, divided, or multiplied.

A further object of the invention is to provide improved means for suspending the several bands.

With these ends in view the invention consists in the improved construction hereinafter fully described Aand pointed out in the claims.

In the drawings, Figure l is a frontelevation of an arithmetical chart constructed in accordance with my invention. Fig.'2 is an end view.

In the accompanying drawings, in which like letters of reference indicate corresponding parts in both the figures, A. represents a frame, which is composed of the horizontallyarranged top andbottom strips, B, to which is secured a strip of fabric, C. The top and bottom strips are connected at their ends by rods a, and depending from the top strip B are plates b, to which is secured arod, c. The strip C is provided at suitable intervals with cuts or slits d to form retaining-straps c.

D represents a series of vertically-disposed bands arranged a suitable distance apart. These bands are continuous or endless, and have printed on the front side thereof, at intervals, numerals, as shown. These bands are suspended and turn upon the rod c, and

are not arranged in numerical order, and turning one of said bands one place changes the f combination, and thus presents a new or different exercise.

The above-described chart may be .manufactured and supplied at a slight cost, can be readily and easily worked, and is especially adapted for class-drill, the figures being of a sufficient size to enable them to be seen'from any point in a room.

Having iully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a frame having the slitted strip C, of a series of verticallydisposed endless bands having numbers thereon and passing through said slits, and a series of horizontally-arranged endless bands passing under the vertical bands, and marked, substantially for and as the purpose set forth.

2. The` frame comprising the end strips, connected by vertical rods, depending plates on the upper strip and a rod secured to saidL upper strip, said frame having a slitted strip or fabric secured thereto, in combination with the vertical bands passing through said slits and the horizontal bands passing under the vertical bands, as set forth.

In. testimony that-I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

THOMAS HOOLEY. i

Witnesses:

JAMES H. CAMP, GEORGE W. ASHTON.: 

